Gage for erecting conduits.



H. B. NAYLOR.

GAGE FOR EBECTING CONDUITS.

APPLICATION FILED SEPT. 13, 1915.

Patented Sept. 12,1916.

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H. B. NAYLOR.

GAGE FOR ERECTING CONDUITS.

APPLICATION men SEPT. 1a, 1915.

Patented Sept. 12 1916,

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WITNESSES MM W 6 UNITED STATES PATENT OFFICE.

HARRY B. NAYLOR, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO NATIONAL FIRE PBOOFING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

GAGE FOR ERECTING CONDUITS.

T 0 all whom it 972 (19 concern Be it known that I, I'IARRY B. NAYLOR, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Gages for Erecting Conduits, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is an end view of one form of my improved gage in use. Fig. 2 is a sectional View of the gage on the line II-II of Fig. 1. Fig. 3 is a perspective view of the gage looking in the opposite direction from that shown in Fig. 1. Fig. 4 is a view similar to Fig. 1, showing a gage for constructing the upper portion of the conduit. Fig. 5 is a plan view of the gage shown in Fig. 4.

My invention has relation to gages for building arched structures such as conduits, etc., which may be built up of blocks or tiles, and is designed to provide a cheap and efficient device, which can readily be handled and which is arranged to position each individual block.

In building'conduitstructures by one of the methods in use today, the trench is shaped to conform with the lower half of the conduit, which is generally semi-cylindrical in form, but as is well known to those familiar with this work, it is impossible to accurately shape the trench to act as a form for receiving the tiles or blocks, this being due to the fact that frequently the earth in which the trench is formed may be stony, so that it is impossible to dig the trench in semi-cylindrical form.

By the use of my improved gage, it will be possible to properly position the blocks in semi-cylindrical form in the lower portion of the structure, but also to properly position each of the blocks relative to the other blocks.

The precise nature of my invention will be best understood by reference to the accompanying drawings in which I have shown one embodiment thereof, it being premised, however, that changes may be made in the construction and general arrangement of the device without departing from the spirit and scope of my invention, as defined in the appended claims.

Specification of Letters Patent.

Patented Sept. 12, 1916.

Serial No. 50,347.

In-the drawings, the reference character 2 designates the entire gage, the body of which is formed of angle iron having a flange 3 parallel with the center of the gage, and a radial flange l extending at right angles thereto.

5 are brace members for holding the gage in cylindrical form and 6 are radial projections connected to the flanges 3 and 4, spaced from each other a distance slightly greater than the length of the blocks to be used in constructing the conduit.

In Figs. 1 to 3 I have shown a gage adapted to be used in constructingthe lower half of a conduit or sewer, while in Figs. 4 and 5 I have shown a similar gage which is adapted to be used for constructing the top portion of the sewer.

In constructing a conduit or sewer, such as shown in Fig. Al, the bottom of the trench is dug in semi-cylindrical form, as near as possible, as is usually done when building structures of this kind, and a gage such as shown in Figs. 1 to 3 is used for positioning one end of the first row of tiles. After the tiles have been positively positioned in the gage, earth is tamped under the tiles so that they. will be supported thereby after the gage has been removed. After the first row of tiles has been positioned, mortar is placed between the longitudinal joints of adjacent tiles and the gage is then moved longitudi-.

nally in the trench a distance equal to the length of the tiles, and the second row of tiles A is positioned at one end by means of the gage, while the other ends of the tiles are positioned with relation to the tiles already laid by tamping earth under the inner ends of the tiles, and earth is also tamped under the outer ends thereof to support them after the gage has been removed. Mortar is placed on the inner surfaces of the tiles of both rows, and between the rows of tiles, and arow of tiles l3 of the inner course is placed in position over the first two rows of the tiles A, the centers of the tiles B are placed over thejoint between the two rows of tiles A, so that the joints are broken between the tiles of the inner and outer courses. The above operation is repeated to lay a predetermined number of rows of tiles A and B shown in cross-section in Fig. 4.

A gage, such as shown in Figs. 4 and 5, which is the reverse of the gage shown in Figs. 1 to 3, may be used for constructing the top portion of the sewer or conduit, the central projections 6 are supported on the upper tiles or blocks B of the inner course, and the blocks C of one row of the inner course are placed in position on the gage and are supported on the central projections G and the curved flange 3 which is parallel to the center of the gage. The blocks D are then placed in position, as well as a block D, one of which is shown in full lines ready to be dropped into position. After the first row of tiles C, D and D are placed in position, mortar is inserted in the longitudinal joints between the tiles, or the mortar may be placed upon the edges of the tiles as they are inserted. A second row of tiles of the inner course is then placed in position in a similar manner, so that two rows of tiles of the inner course are laid before the first row of outer tiles is placed in position. In Fig. at, I have shown a gage in connection with the second row of tiles, the first row having already been placed in position, the block D of the first row being in position and shaded, while the block D of the second row is shown in a position to be dropped onto the gage. After the second row of the tiles C, D and D of the inner course are placed in position, mortar is placed on the tops or outer faces of said tiles and between the two, and a row of tiles E, shown in dotted lines, is then placed on the two rows of the inner course, the centers of the tiles E being over the joint between the two rows of the tiles of the inner course.

In the drawings, I have shown a gage used in connection with tiles of great width, and in which only one block is placed between the radial spacing projections, but it will be readily understood by those familiar with the art that a pli'u'ality of small tiles might be placed between each of the projections (3, and that the device is adapted to be used with tiles or blocks of various shapes.

The advantages of my invention result from theprovision of a gage for building sewers or conduit structures having means for positioning the ends of the tiles or blocks relative to the center of the structure, together with means for positioning the ends of all of the tiles of one portion of one course and the sides of some of the tiles.

I claim:

1. An arc-shaped gage for building arched conduits, said gage having an arc-shaped flange arranged to support and position segmental blocks, and a plurality of spaced ribs arranged to position said blocks relatively to each other, substantially as described.

2. A gage for building cylindrical structures having an are shaped flange and a radial flange, the radial flange being ar ranged to position the longitudinal faces of the tiles; substantially as described.

3. A gage and support for use in the construction of arch conduits built up of blocks, said gage having a contour corresponding to the contour of the structure to be built, and having a seating portion for supporting the side faces of said blocks, and projections adapted to engage and position the edge portions of some of the blocks; substantially as described.

4. A gage for laying blocks in arch form having an arc-shaped flange and a radial flange, the radial flange being arranged to position the endsof the blocks, while the arc-shaped flange is arranged to engage the side faces of the blocks to position them with relation to the structure being erected, and block spacing and supporting projections connected to one of said flanges and arranged to position and support some of the blocks in their longitudinal relation to the structure; substantially as described.

5. A gage having an arc-shaped flange and a radial flange, and spacing projections connected to both of said flanges, together with reinforcing members connected to the radial flange; substantially as described.

In testimony whereof I have hereunto set my hand.

HARRY B. NAYLOR. Vitnesses:

Jesse B. HELLER, GEO. B. BLEMING.

Copies of this patent may be obtained for five cents each, by addressing,the Commissioner of Patents. Washington, I). G. 

